In preparing roasted tomato soup, which includes tomatoes that I roast in the oven at 200 °C (392 °F) for 30 minutes, and then simmer for a long time, I am having an issue with tomato skins. I find these skins largely inedible: They separate from the pulp and become very tough. Since these skins might contain some flavour, I simmer them with the rest of the tomatoes, and only then throw them away. This is a bit fidgety and takes a while.
I noticed that some tomato varieties, namely the ones that are sold on vines, have much softer skins that do not separate from the pulp and remain edible.
Do tomato skins have, in fact, any flavour that I would want to keep? What is the correct way to handle tomato skins?